Drill.



0. o. HANSEN.v

DRILL.

APPLICATION FILED APR.2S,1912,

Patented 0013. 13, 1914.

M2/enfon- To all 'whoml it may concern:

Thistubesn .UNTTED STATES PATENT OFFICE.Y

Cm C. HANSEN, Ol EASTON`PENN8YLVANIA, ABSIGNOB TO INGEBSOLL RAND COKPANY, OF lNEW YORK, N. Y., A CORPORATION OF NVEW JERSEY.

DRILL.

speemuon afnam-raten.

Patented oet. 13, 1914.

Be it known that I, emma C; Hams,-

a eitizenof the United States, and resident of Easton, in the county of Northampton and State of Pennsylvania, have inventedl a new and useful Improvement in Drills, of4 which the following is a specification.

This invention consists in a novel drill", structure in which 'the drill steel is provided with a surroundingcasing forming between them one or moremclosed channels through' which the bored material may :be forced fromA the cutting end of the steel, the channel or channels being utilized for theescape of the cut material and being provided with check valves for preventing the return of the said cut material. l

My invention more particularly relates to the particular construction of the valvel cage and the tube whereby the valve cage` is' held in position by the tube.

In the accompanying drawings, Figure 1 represents a cruciform drill steel in sideelevation with my invention applied thereto. Fig. 2 is a similar View in a plane at right angles to Fig. 1,tl1'e tube bein shown in longitudinal.. central section. ig. 3 is a. longitudinal central section through the drill steel, the tube whichsurroun-ds thel same and through two oppositely arranged valve cages. Fig. 4 is a transverse section taken in the plane of the line 'A-A of Fig. 2, looking in the direction of the 'arrows, and Fig. 5 is a transverse section taken in the yplane of thevline lik-71?4 of Fig. 2, looking in the direction of the arrows.A

The drill steelis denoted by 1, which steel may be reciprocated by a drill of any well known or approved construction. This drill steel is herein shown as cruciform in cross section. A tube'2 surrounds the drill steel and extends from' a. point near the cutting end thereof thedesired dist'snoevslong the ugly .the outer edges of the wings 3, 4, 5, 6, of the drill SteeL'thereby forming four inclosed channels 7, 8, 9', 10, between the drill steel and the said Check valves are located in one or more of the inclosed channels for preventing return of the cut material which may be vfor-ced therethrough. In the present instance I. hafe shown two `of these check valves and their cages` located in the inclosed channels 8 and 10, leaving the in- 56 chised channels 'Tand 9 open for the intro-V duction-of water to the cutting' end of the .drill steel` if lso desired.

The heck lvalve is shown as a ball valve the'wall of the tube 2 for maintaining the cage in position when the parts are -assembl'ed.V

'l In assembling the parts, the 'check valve cages are inserted into the tube 2, with theirprojections 16 seated Within the holes 17. The drill steel is then inserted into the tube,

arrangement of the several parts without departing from the spirit and scope of my invention; hence I do not wish to'limit myself strictly to the structure herein shown.

What I claim is:

1. A drill steel, a .tube surrounding it and Aforming together therewith a channel, a check valve an'd its 'cage located in said' position compnsl' ng a projection on the .and a hole 1n the tube for receivinge 4 projection.

"2. drill y E l cruciforin in cross section, a tube surrounding the stoet-forming in 100 closed channels, one or more of said chan- .nsls left valveless, e valve .or valves .11, and its cage comprises'a body portion 60 the inwardly projecting flanges 13 and14 75 A be resorted to in the form, construction and B5 and described, but o channel and, meansforlocliing the cage in A I 4 located in the remaining channel or chanpresenceof two witnesses, this nineteenth nels, a cage or cages and means for locking day of April, 1912. the cage or cages in position comprising a projection on each cage and a hole in the CHARLES C' HANSEN' 5 tube for receiving said projection. Witnesses;

In testimony, that I claim the foregoing F. GEORGE BARRY, as my invention, I have signed my name in C. S. SUNDGREN. 

